does the stalling speed change with height?

Answer 1

governorkickass, you are either a NOT a Aerospace Engineer., or you need to go back to school.
A stall is caused by the separation of airflow from the wings upper surface .
This results in a rapid decrease in lift. For a given airplane, a stall always occurs at the same angle, regardless of AIRSPEED,FLIGHT ATTITUDE, or WEIGHT.. This angle is the critical angle of attack. Altitude has nothing to do with it.

Answer 2

The critical angle of attack is the governing force in determining a stall. You can stall any aircraft, at any altitude or airspeed if you exceed that angle.
If you are referring to level flight, the indicated airspeed will be the same at any altitude, but he ground speed will be higher at the higher altitude. That is exactly why you are taught to use the ASI to determine speed. The plane will take off at the same airspeed in Leadville as it will in Tampa, but you will be going much faster over the ground in Leadville..

Answer 3

n o it does not that engineer does not know what he is talking about, stallling you can do 2 ways, speed and attitude , I can stall the aircraft 50 ft off the ground doing 110 knots by a pitch change and i can stall the aircraft 6,000 ft off the ground with a pitch change also, a stall is when the relative wind no longer flows over the wings altitude has nothing to do with it and a stall spedd is dirty or clean, and that has to do with speed to create lift, i am a pilot, ciao

Answer 4

No, stall speed is a factor of angle of attack and configuration. It remains the same (under the same configuration) regardless of altitude. It does go up when the airplane is under more load. But, an airplane will stall at the same speed at 1,000 feet as it does at 10,000 feet, given the same configuration - flaps, gear, etc...

Answer 5

all the possible answers(Yes and No) are at the same time right and wrong, depending on the point of view......
The stalling speed is always the same in term of EAS(equivalent air speed), but not the same in term of TAS(true air speed), so the stall speed changes with the altitude(more properly with the air density).....but EAS is the speed at Sealevel that gives the same dynamic pressure of the TAS at that altitude.. so in EAS the stall speed is always the same.

Answer 6

No.

Stall speed is determined by the angle of attack. When that angle exceeds about 15 degrees, regardless of speed or altitude, the wing stalls.

Answer 7

yes, as the properties of the air change as your altitude increases or decreases, your stalling speed would change. If you go up, the stalling speed would increase as well, meaning you'd need to move faster to not stall out.

Edit:
Yes, I am an Aerospace engineer, and unfortunately, I am correct in this case. I was referring to True Airspeed (TAS). Please refer to Anderson's Aerodynamics book. Yes, stall is directly related to that separation of airflows. However, this ability is directly affected by the air properties, which do change with altitude. Please see the below equation to see how density is tied in.

Vstall= sqrt((W/S) / (CLmax × ½density))
Since decreases as you go up in height, Vstall will increase.

Also, thank you sparviero for weighing in. I appreciate your ability to understand the different opinions on this question and not just misunderstanding and attempting to rip me a new one.

Answer 8

As given in an answer above, it depends on how you look on it. And it proves the need to give enough details so that a useful answer may be given.

Now what speed (IAS, TAS...), which configuration (Vsxx) and what is the attitude of flight (level, climb...) and what are the heights involved?

Answer 9

Yep -- In aircraft and flying nearly everything is in flux and relative. Landing speed in Denver is higher than in Miami. Air density has everything to do with stall speed.

Answer 10

yes you need more speed if you are going up with alot of weight.without weight its more easy.no the height doesn't do anything